   (with
     (phrase [2/3 1/3 2/3 1/3 3/3]
             [ 76  74  76  77  79]))
-  (times 2))"]
+  (times 2)) ; What happens if the times is put before the with? Why?"]
    :bpm
-   ["So far every unit of time has been a second. If we want to speed up or slow down the music, we can define how many
-    beats-per-minute there are."
+   ["So far every unit of time has been a second, in other words 60 beats per minute.
+    If we want to speed up or slow down the music, we can define how many beats-per-minute there are. We use 'tempo' to
+    update the time and duration of each note according to the chosen 'bpm'."
     "(->>
   (phrase [3/3 3/3 2/3 1/3 3/3]
           [ 72  72  72  74  76])

    (phrase [2/3 1/3 2/3 1/3 3/3]
            [ 76  74  76  77  79])))"]
   :with
   ["Alternatively, we can play two melodies at the same time. If they're well-chosen, we'll get harmony."
   "(->>
  (phrase [3/3 3/3 2/3 1/3 3/3]
          [ 72  72  72  74  76])
  (with

    "(phrase [3/3 3/3 2/3 1/3 3/3] ; You can change both the durations and the pitches.
        [ 72  72  72  74  76])"]
   :then
   ["We can combine two melodies to make a longer one."
    "(->>
  (phrase [3/3 3/3 2/3 1/3 3/3] ; Can you recognise the tune yet?
          [ 72  72  72  74  76])
